Trial frame



H. G. HEROLD ET AL Jan. 15 1924.

TRIAL FRAME Filed July 15. 1921 E M a INVENTOR M 5.

Lg- V 644,119- 6 7*: ATTORNEY Patented Jan. 15, 1924.

UNITED STATES 1,481,007 PATENT OFFICE HARRY G. HEROLD, or HAsBRoUoK HEIGHTS, Nnw AND EMIL' n. MEYRO- WI'IZ, or NEW YORK, N. Y., ASSIGNORS T0 E. B. MEYROWIT'Z, INC., on NEW YORK,

N. Y., A CORPORATION OF NEW YORK.

TRIAL To all whom it may concern:

Be it known that we, HARRY Gr. Hnnono, citizen of the United States, and resident of Hasbrouck Heights, county of Bergen, and State of New Jersey, and EMIL B. MEY- Rowrrz. citizen of the United States, and resident of the city, county, and State of New York, have invented an Improvement in Trial Frames, of which the following is a specification.

The present invention relates to an improvement in trial frames for eye glass lenses, the object of which is to afford a device of durable and simple construction and capable of superior accuracy infuse. Various deficiencies are found in types of trial frames heretofore furnished to opticians and oculists and it is one of the objects of this invention to eliminate them and to provide a frame in which the interpupillary distance may be varied without producing error in the reading due to twisting or distorting the lens holders out of their proper position normal to the axis of the pupil. In using the well known type of frame consisting of a supporting bar, lens holders, and temples fastened to the lens holders, the parts very quickly lose their proper relative positions and, more particularly, the lens holders are twisted out of their true axial positions and therefore do not give true readings on the annular axis scales forming a part of or co-operating with said holders. It is a further object of our invention to provide a trial frame by which a true reading of the axis scale may be obtained. The desired results are obtained by providing a rigid support and guide for the lens holders which will be unaffected by adjusting or measuring movement of the lens holders and will therefore maintain the same in the required position with respect to the axi of the pupil.

One embodiment of our invention is illustrated in the drawings accompanying the present specification, and in which Figure 1 is a front inverted elevation,

Figure 2 a top plan view, and

Figure 3 a rear inverted elevation.

The drawings disclose as an illustrative embodiment of our invention a trial frame comprising a pair of lens holders each including front and rear portions 1 and 2, respectively, connected by suitable means such as a rivet 3;, and operatively mounted on a support or face plate which preferably consists of'a transverse member or bridge and depending apertured members 5 in tegral with the bridge. The bridge supports 'a suitable nose piece 6 which is-secured at one end of a bar 7 slidably mounted in a housing 8, said; housing being in turn secured to a bar SIsIi'd'ably-mounted on the bridge and retained thereon by means of cooperating cleats '10. i

The improved :frame also includes suitable templesfl each pivotallysecured atone side of a'depending'aperture'd member, said member being provided with ai' laterally ex:- tending'lu g 12 integral therewith andb'en't to form a box to oiie'fwall ofiwhich the temple '11 is connected Thus w iththebfidge, depending apertured: members and bar: supporting lugs inbne piece we provide a relatively rigid sup-port for themovable and adjustable portions of thedevice. This supporthas slotted openings 1%, a pair for each lens'holder. one slot o'fa'ipaiir'being'in the bridge portion sweats aperture: while the other is positioned parallel thereto and below the aperture. In the illustrated embodiment, the pins or rivets 3 pass through their respective slots, thus supporting the lens holders therein at top and bottom and permitting them to slide freely with respect to the rigid support. The lens holder may be actuated by any suitable means but, as shown in the drawings, we prefer to provide the rear portion 2 of the lens holder with a laterally extending lug 13 having its free end bent to form a box, one wall of which has a threaded opening to receive a set screw 17. The laterally exposed wall of the box formed by bending the lug 12 is provided with a hole which registers with the threaded opening in the wall of the bent over portion of the lug 13 and engages an annularly grooved portion of the set screw to prevent longitudinal movement thereof, so that when the latter is rotated the lens holder will be moved laterally.

It is contemplated that the lens holders will be equipped with suitable lens retaining members such as the lugs or spurs 15 which will support lenses and permit rotation or other movement thereof to secure the desired axial adjustment with reference to a suitable axis scale which may conven- ()ne of the lens holders will also be prioitlg. ani ter upillary distance in ii f gee eeh e t: t er ee e i e i ics a pointer or index arm 16 positioned to co-operate with the scale and to move relatively thereto when said other Lens holder is operatively moved back and forth for adjustment.

I To further insure rigidity of the device thewpperiedglebf the bridge is bent to form ahemgie w'hieh' may also serve; if desired, on additional guiding member for the upper-edge of the-rear member 2 of the lensiholdersr r ED Q'IJGIHitilOQil iiZ iscontempl-ated that the trin'l iframe-willb set inpositi'on with the flesevpiieoeisnppoirti Lit atf the c'o'rreot dista'noefrhrn'tlaeipatie iiisfeyes and the temFles resting above the paitiientis'earsf The ens holder at the left, Figiile 3 will then be iiiqmed i'elhtively'to theefiade plate by means 'ofivtirefsetrserersifuntil'tlie eenter ofthe ciro'ular opening therein coincides with" an exthe we of the pupil o'i. the patiehts e'y'e. Ehe othev'lens holder will them be akijlisted simi laa'ly if neessary and tied inteq pnfli llaryrdistanbe will be indicated onrthe scalerbythe-poniriter; Adjustment for pxositioninxznf the cylindrical axis 'may then 7 lfoliowvi f required.-

fl- Frorfilthe forngoing deseription and staterinentio'f mode oflopenntionit will be apparehtthat ioiir iimprowd trial frame dlfords a vei y aeeuretiefand'a'eiiable instrument m the of; wlgioh fine adjustments are insuredi The r'igid unitary -on struction of themain body member or face plate and the two point Support of the lens holders therein combined with the positioning of the lens holder moving means to be effective substantially in a horizontal line passing midway between the support points adds further to the durability of the device and its continued preeision of adjustment and operation.

We claim as our invention:

1. Atrial frame'for fitting eye glass letnses comprising a face plate having an aperture and pzirallel guidingslotsarranged respectivly above and below said aperture and a lens holder having a member disposed forwe rdly of the faceplate, a member disposed rearwardly thereofrand holder supporting means passing through the slots and connecting said members.

2. A. trial frame for fitting eyeglass lenses eomprising aunitarv body" portion providing a bridge. a pair ofapert ured members depending therefrom and a lag extending laterally f om eaeh of said de-pending'apertureclmembers said lug being bent to form a 50 2;, a lens hblderslidably mounted on each of said depending a'pertured'members, and means cooperating with said box to impart'lateral movement to the lens holders. In testimony whereof, We have signed our names to this specification this 6th day of July 1921. HARRY Gr. HEB-OLD. EMIL B. MEY-ROWIT'Z. 

